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Adsorption of 2,4,6-trichlorophenol by multi-walled carbon nanotubes as affected by Cu(II)
Chen, GC; Shan, XQ; Wang, YS; Wen, B; Pei, ZG; Xie, YN; Liu, T; Pignatello, JJ; Xie YN(谢亚宁); Liu T(刘涛)
2009
发表期刊WATER RESEARCH
卷号43期号:9页码:2409-2418
通讯作者[Chen, Guang-Cai ; Shan, Xiao-Quan ; Wang, Yu-Sheng ; Wen, Bei ; Pei, Zhi-Guo] Chinese Acad Sci, State Key Lab Environm Chem & Ecotoxicol, Ecoenvironm Sci Res Ctr, Beijing 100085, Peoples R China ; [Chen, Guang-Cai] Chinese Acad Forestry, Res Inst Subtrop Forestry, Fuyang 311400, Zhejiang, Peoples R China ; [Xie, Ya-Ning ; Liu, Tao] Chinese Acad Sci, Inst High Energy Phys, Beijing Synchrotron Radiat Lab, Beijing 100049, Peoples R China ; [Pignatello, Joseph J.] Connecticut Agr Expt Stn, Dept Soil & Water, New Haven, CT 06504 USA
摘要Adsorption equilibrium of 2,4,6-trichlorophenol (TCP) on multi-walled carbon nanotubes (MWCNTs) was investigated to explore the possibility of using MWCNTs for concentration, detection and removal of TCP from contaminated water. The adsorption of TCP on MWCNTs at pH 4 was nonlinear, reversible and best fit by a Polanyi-Manes model. Oxidation treatment increased surface area and introduced hydrophilic carboxylic groups to the defect sites of MWCNTs, hence increased the sorption of TCP and Cu(II) individually. Cu(II) suppressed the sorption of TCP on oxidized MWCNTs15A, but had little effect on as-grown MWCNTs15. TCP had no influence on Cu(II) sorption to either. The mechanisms of Cu(II) suppression effect on TCP adsorption are ascribed to the formation of surface complexes of Cu(II), which was verified by X-ray absorption spectroscopy. Cu(II) exerts a cross-linking effect of functional groups on adjacent tubes, creating a more tightly knit bundle and suppressing the condensation of TCP in the pore spaces between the tubes. The large hydration sphere around surface complexes of Cu(II) may also intrude or shield hydrophilic sites, leading to the "crowding out" of TCP around the Cu(II)-complexed sites. (C) 2009 Elsevier Ltd. All rights reserved.
文章类型Article
关键词2,4,6-Trichlorophenol Cu(II) Multi-walled carbon nanotubes Adsorption
学科领域Engineering; Environmental Sciences & Ecology; Water Resources
研究领域[WOS]Engineering ; Environmental Sciences & Ecology ; Water Resources
DOI10.1016/j.watres.2009.03.002
URL查看原文
语种英语
WOS类目Engineering, Environmental ; Environmental Sciences ; Water Resources
WOS记录号WOS:000266468500008
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被引频次:89[WOS]   [WOS记录]     [WOS相关记录]
文献类型期刊论文
条目标识符http://ir.ihep.ac.cn/handle/311005/239742
专题多学科研究中心
粒子天体物理中心
作者单位中国科学院高能物理研究所
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Chen, GC,Shan, XQ,Wang, YS,et al. Adsorption of 2,4,6-trichlorophenol by multi-walled carbon nanotubes as affected by Cu(II)[J]. WATER RESEARCH,2009,43(9):2409-2418.
APA Chen, GC.,Shan, XQ.,Wang, YS.,Wen, B.,Pei, ZG.,...&刘涛.(2009).Adsorption of 2,4,6-trichlorophenol by multi-walled carbon nanotubes as affected by Cu(II).WATER RESEARCH,43(9),2409-2418.
MLA Chen, GC,et al."Adsorption of 2,4,6-trichlorophenol by multi-walled carbon nanotubes as affected by Cu(II)".WATER RESEARCH 43.9(2009):2409-2418.
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